public async Task Details()

in PartsUnlimited-aspnet45/src/PartsUnlimitedWebsite/Controllers/OrdersController.cs [35:98]
46 lines of code
5 McCabe index (conditional complexity)

        public async Task<ActionResult> Details(int? id)
        {
            if (id == null)
            {
                _telemetry.TrackTrace("Order/Server/NullId");
                return RedirectToAction("Index", new { invalidOrderSearch = Request.QueryString["id"] });
            }

            var order = await _ordersQuery.FindOrderAsync(id.Value);
            var username = User.Identity.GetUserName();

            // If the username isn't the same as the logged in user, return as if the order does not exist
            if (order == null || !String.Equals(order.Username, username, StringComparison.Ordinal))
            {
                _telemetry.TrackTrace("Order/Server/UsernameMismatch");
                return RedirectToAction("Index", new { invalidOrderSearch = id.ToString() });
            }

            // Capture order review event for analysis
            var eventProperties = new Dictionary<string, string>()
                {
                    {"Id", id.ToString() },
                    {"Username", username }
                };
            var costSummary = new OrderCostSummary()
            {
                CartSubTotal = 0.ToString("C"),
                CartShipping = 0.ToString("C"),
                CartTax = 0.ToString("C"),
                CartTotal = 0.ToString("C"),
            };
            if (order.OrderDetails == null)
            {
                _telemetry.TrackEvent("Order/Server/NullDetails", eventProperties, null);
            }
            else
            {
                var eventMeasurements = new Dictionary<string, double>()
                {
                    {"LineItemCount", order.OrderDetails.Count }
                };
                _telemetry.TrackEvent("Order/Server/Details", eventProperties, eventMeasurements);

				costSummary = _shippingTaxCalc.CalculateCost(order.OrderDetails, order.PostalCode);
				//var itemsCount = order.OrderDetails.Sum(x => x.Count);
				//var subTotal = order.OrderDetails.Sum(x => x.Count * x.Product.Price);
				//var shipping = itemsCount * (decimal)6.00;
				//var tax = (subTotal + shipping) * (decimal)0.06;
				//var total = subTotal + shipping + tax;

				//costSummary.CartSubTotal = subTotal.ToString("C");
				//costSummary.CartShipping = shipping.ToString("C");
				//costSummary.CartTax = tax.ToString("C");
				//costSummary.CartTotal = total.ToString("C");
			}

            var viewModel = new OrderDetailsViewModel
            {
                OrderCostSummary = costSummary,
                Order = order
            };

            return View(viewModel);
        }